Behaviors of the microtubule anchoring factor RFP-LL5α (red) and microtubules (green) in living epithelial cells undergoing random migration. During the time-lapse imaging, the cells divided into two daughter cells. Cortical patches of RFP-LL5α appear when cells become attached to the glass substrate, but disappear when the cells become detached at the onset of cell division. The patches reappear soon after the cells adhere to the glass again. Overall findings from this publication showed that signaling from laminin-integrin associations plays a role in attaching microtubule plus ends to the epithelial basal cell cortex. This is the original data file for Video 4 from J Cell Biol (2010) 189 (5):901-917.